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ISBN:
978B008GPQEG4
/ B008GPQEGX
The Elements of Algebra: Designed for the Use of Schools, Vol. 1 (Classic Reprint)
by:John William Colenso

Algebra is the science which reasons about quantities by means of letters of the A lphabet, and certain signs and symbols, which are employed to represent both the quantities themselves, and the manner in which they are connected with others. Thus we might put a to represent 7, and then twice a would represent 14; or we might put a to represent 3, and...
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Algebra is the science which reasons about quantities by means of letters of the A lphabet, and certain signs and symbols, which are employed to represent both the quantities themselves, and the manner in which they are connected with others. Thus we might put a to represent 7, and then twice a would represent 14; or we might put a to represent 3, and then twice a would represent 6, three times a, 9, c. 2. The sign ={equal) denotes that the quantities between which it stands are equal to one another. Thus, if a =17, then ttaice a =34. 3. The sign .. stands for tJ ien or therefore, and .for since or hecause. 4. The sign +{plus) denotes that the quantity before which it stands is added, and the sign {minus) that the quantity before which it stands is subtracted. Thus 5+ 3= 8, 5- 3= 2; and if a =3 and 6= 4, then a +6 =3 +4 =7, a+ +2 =3 +4 +2=9, 10-a= 10-3 =7, 10-0-6 =10-3-4 =7-4 =3. The sign ~is used to denote that the less of two quantities is taken from the greater, when it is not known which is the greater. Thus a -6 denotes the difference between a and 6.(Typographical errors above are due to OCR software and don't occur in the book.)About the Publisher Forgotten Books is a publisher of historical writings, such as: Philosophy, Classics, Science, Religion, History, Folklore and Mythology.Forgotten Books' Classic Reprint Series utilizes the latest technology to regenerate facsimiles of historically important writings. Careful attention has been made to accurately preserve the original format of each page whilst digitally enhancing the aged text. Read books online for free at www.forgottenbooks.org
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